Mailman 3 December 2004 - Python.NET

Embedded scripting
by Amod Kulkarni 29 Dec '04

29 Dec '04

Hi, I am new to PythonNet and am experimenting a little bit with it. Basically I am trying to call python function from C# code with the help of Python.Runtime DLL. I was able to import a python module in C# and call one of its functions. But this works fine only when the module supplied to PythonEngine.ImportMOdule() function is physically existing. What if I want to import a module that does not physically exist but is merged in some other applications EXE? Is there any way to load such a module using PythonEngine.ImportMOdule()? Thanks in advance.

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RE: [Python.NET] AttributeError: 'MarshalByRefObject' object has noattribute ...
by Martin Richard 28 Dec '04

28 Dec '04

Thanks for the fast reply. The pseudo-cast did it. I'd wonder why trying Itoy() gave complaints about needing an argument. Rick -----Original Message----- From: Brian Lloyd [mailto:brian@zope.com] Sent: Tuesday, December 28, 2004 1:13 PM To: Martin Richard; pythondotnet(a)python.org Subject: RE: [Python.NET] AttributeError: 'MarshalByRefObject' object has noattribute ... Hi Martin - Interface types, as they appear to Python, all have a single argument constructor that you can use to "cast" an object to a particular interface. Because System.Activator.GetObject() has a return type of object, the runtime returns the object as its true runtime type to Python (which happens to be MarshalByRefObject). So I think all you need to do is an "explicit cast": remoteObj = System.Activator.GetObject(IToy, url) mytoy = IToy(remoteObj) mytoy.someMethod(...) Hope this helps, Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com > -----Original Message----- > From: pythondotnet-bounces+brian=zope.com(a)python.org > [mailto:pythondotnet-bounces+brian=zope.com@python.org]On Behalf Of > Martin Richard > Sent: Tuesday, December 28, 2004 3:57 PM > To: pythondotnet(a)python.org > Subject: [Python.NET] AttributeError: 'MarshalByRefObject' object has > noattribute ... > > > This is python 2.3. > > I start a toy .NET service. This is a C-sharp executable. > > In the C-sharp files, this code exists: > > namespace foo > { > public class Toy : MarshalByRefObject, IToy > ... > } > > In python, after loading an assembly, I can successfully do either: > from CLR.foo import Toy > from CLR.foo import IToy > > I can get a string for the url of the service from the config file. > > I then try: > # using Toy also gives the same result > remoteObj = System.Activator.GetObject(IToy, url) > > and it returns this for remoteObj: > <CLR.System.MarshalByRefObject object at 0x0090D090> > > If I try to invoke a method on remoteObj, I get this error: > AttributeError: 'MarshalByRefObject' object has no attribute > 'methodName'. > > It is almost as if the remoteObj has not been cast to the correct type > (Itoy). But if I do remoteObj.ToString() it returns 'foo.Toy'. > > If I just try to instantiate a local instance of Toy -- > t = Toy() > -- this succeeds, and I can successfully invoke the method that fails > on the remoteObj. > > Any ideas why the remoteObj is failing? > > Thanks, > > Rick > > > > > > _________________________________________________ > Python.NET mailing list - PythonDotNet(a)python.org > http://mail.python.org/mailman/listinfo/pythondotnet >

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AttributeError: 'MarshalByRefObject' object has no attribute ...
by Martin Richard 28 Dec '04

28 Dec '04

This is python 2.3. I start a toy .NET service. This is a C-sharp executable. In the C-sharp files, this code exists: namespace foo { public class Toy : MarshalByRefObject, IToy ... } In python, after loading an assembly, I can successfully do either: from CLR.foo import Toy from CLR.foo import IToy I can get a string for the url of the service from the config file. I then try: # using Toy also gives the same result remoteObj = System.Activator.GetObject(IToy, url) and it returns this for remoteObj: <CLR.System.MarshalByRefObject object at 0x0090D090> If I try to invoke a method on remoteObj, I get this error: AttributeError: 'MarshalByRefObject' object has no attribute 'methodName'. It is almost as if the remoteObj has not been cast to the correct type (Itoy). But if I do remoteObj.ToString() it returns 'foo.Toy'. If I just try to instantiate a local instance of Toy -- t = Toy() -- this succeeds, and I can successfully invoke the method that fails on the remoteObj. Any ideas why the remoteObj is failing? Thanks, Rick

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installer
by Yogesh Ketkar 21 Dec '04

21 Dec '04

Hello, I already have python2.4 installed and now when i got PythonNet-1.0-beta4.tar it comes with another python.exe, is there a installation of python for dot net which runs on top of existing python installation? Regards, Yogesh

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re: [Python.NET] ANNOUNCE: Python for .NET beta 4 released
by dwight_fellman＠datacard.com 14 Dec '04

14 Dec '04

We really appreciate your efforts on this. Thanks!

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ANNOUNCE: Python for .NET beta 4 released
by Brian Lloyd 14 Dec '04

14 Dec '04

Python for .NET 1.0 beta 4 has been released - you can download it from: http://www.zope.org/Members/Brian/PythonNet/ Python for .NET is a near-seamless integration of Python with the .NET common language runtime. For more details, see the README: http://www.zope.org/Members/Brian/PythonNet/README.html Selected changes from the beta 4 release: - Updated the bundled C Python runtime and libraries to Python 2.4. - Managed classes reflected to Python now have an __doc__ attribute that contains a listing of the class constructor signatures. - Fixed a problem that made it impossible to override "special" methods like __getitem__ in subclasses of managed classes. Now the tests all pass, and there is much rejoicing. - Fixed a problem that prevented passing null (None) for array arguments. - Added support to directly iterate over objects that support IEnumerator (as well as IEnumerable). Thanks to Greg Chapman for prodding me ;) - Added a section to the README dealing with rebuilding Python for .NET against other CPython versions. - Fixed some problems with how COM-based objects are exposed and how members of inherited interfaces are exposed. Thanks to Bruce Dodson for patches on this. There is a mailing list for discussion and questions about Python for .NET at: pythondotnet(a)python.org. To subscribe to the mailing list or read the online archives, see: http://mail.python.org/mailman/listinfo/pythondotnet To report bugs or request features in Python for .NET, please use the PythonNet issue tracker at: http://www.zope.org/Members/Brian/PythonNet/Collector/ Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com

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PythonNet with Python 2.4
by kc cheng 09 Dec '04

09 Dec '04

I am running Python 2.4. Tried using PyhonNetwith my existing python by copying python.runtime.dll and CLR.dll, but when import CLR, get error: System Error, Dynamic Module not initialized properly. Is it because incompatible with Python 2.4? Anyone use Python 2.4 with PythonNet?

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Michiel van Schoor/Rangegate is out of the office.
by Michiel.vanSchoor＠za.rangegate.com 07 Dec '04

07 Dec '04

I will be out of the office starting 2004/12/03 and will not return until 2005/01/10. I will respond to your message when I return. ************************************************************************************************************************************** This communication is privileged and contains confidential information intended only for the persons to whom it is addressed. Any other distribution, copying or disclosure is strictly prohibited. If you have received this message in error, please notify the sender immediately and delete the message without reading or copying it.

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Michiel van Schoor/Rangegate is out of the office.
by Michiel.vanSchoor＠za.rangegate.com 07 Dec '04

07 Dec '04

I will be out of the office starting 2004/11/29 and will not return until 2005/01/10. I will respond to your message when I return. ************************************************************************************************************************************** This communication is privileged and contains confidential information intended only for the persons to whom it is addressed. Any other distribution, copying or disclosure is strictly prohibited. If you have received this message in error, please notify the sender immediately and delete the message without reading or copying it.

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RE: The future of Python.NET
by Brian Lloyd 06 Dec '04

06 Dec '04

> I would like to encourage you to continue your excellent work on > Python.NET. It's my opinion that it will be a _long_ time before > IronPython comes close to Python.NET in terms of usability, if ever. > Here are some of my reasons for that opinion: > > <snip good reasons> > > Basically my point is that Python.NET is great and is immediately > useful, and I sincerely hope you don't abandon it. As Rumack said > in "Airplane": good luck, we're all counting on you. Thanks for the kind words! I definitely don't plan to abandon it, I just need to get myself off of the critical path as my time is somewhat unpredictable. One thing I'd like to do is get a public tracker / issue collector up to better organize and manage bugs & features - hopefully I'll be able to get that done this week. ...and stop calling me Shirley ;) Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com

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